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Finding the Fourth Proportional to 625,593,463.80, 938,390,195.70 and 165,578,134.20

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Solution

The fourth proportional to 625,593,463.80, 938,390,195.70 and 165,578,134.20 is: 248,367,201.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,593,463.80 : 938,390,195.70 = 165,578,134.20 : x
  2. Step 2: Convert to fraction form
    625,593,463.80/938,390,195.70 = 165,578,134.20/x
  3. Step 3: Cross multiply
    625,593,463.80x = 938,390,195.70 × 165,578,134.20
  4. Step 4: Simplify right side
    625,593,463.80x = 155,376,897,755,578,848
  5. Step 5: Solve for x
    x = 155,376,897,755,578,848/625,593,463.80
  6. Step 6: Final answer
    x = 248,367,201.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.